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**Owning Palette:** Time Frequency Transform VIs

**Requires:** Advanced Signal Processing Toolkit

Decomposes **signal** as a linear combination of Gaussian chirplet elementary functions. Wire data to the **signal** input to determine the polymorphic instance to use or manually select the instance.

Use the pull-down menu to select an instance of this VI.

extension specifies the method to use to pad data at the borders of the input signal to lessen discontinuity. The extension length is half the window length.
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signal specifies the input signal. | |||||||||||

number of terms specifies the maximum number of elementary functions to use in the adaptive representation. Using more elementary functions improves the accuracy of the representation but increases computation time.
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error in describes error conditions that occur before this node runs. This input provides standard error in functionality. | |||||||||||

elementary functions specifies the settings of the elementary functions.
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sampling info returns the sampling information of the signal.
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chirplet info returns the parameters of each detected Gaussian chirplet elementary function.
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reconstructed signal returns the signal reconstructed from the detected elementary functions. | |||||||||||

error out contains error information. This output provides standard error out functionality. |

extension specifies the method to use to pad data at the borders of the input signal to lessen discontinuity. The extension length is half the window length.
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signal specifies the input signal. | |||||||||||

number of terms specifies the maximum number of elementary functions to use in the adaptive representation. Using more elementary functions improves the accuracy of the representation but increases computation time.
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error in describes error conditions that occur before this node runs. This input provides standard error in functionality. | |||||||||||

elementary functions specifies the settings of the elementary functions.
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sampling rate specifies the sampling rate of signal in hertz. sampling rate must be greater than 0, or this VI sets sampling rate to 1 automatically. The default is 1. | |||||||||||

sampling info returns the sampling information of the signal.
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chirplet info returns the parameters of each detected Gaussian chirplet elementary function.
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reconstructed signal returns the signal reconstructed from the specified elementary functions. | |||||||||||

error out contains error information. This output provides standard error out functionality. |

extension specifies the method to use to pad data at the borders of the input signal to lessen discontinuity. The extension length is half the window length.
| |||||||||||

signal specifies the input signal. | |||||||||||

number of terms specifies the maximum number of elementary functions to use in the adaptive representation. Using more elementary functions improves the accuracy of the representation but increases computation time.
| |||||||||||

error in describes error conditions that occur before this node runs. This input provides standard error in functionality. | |||||||||||

elementary functions specifies the settings of the elementary functions.
| |||||||||||

sampling rate specifies the sampling rate of signal in hertz. sampling rate must be greater than 0, or this VI sets sampling rate to 1 automatically. The default is 1. | |||||||||||

sampling info returns the sampling information of the signal.
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chirplet info returns the parameters of each detected Gaussian chirplet elementary function.
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reconstructed signal returns the signal reconstructed from the specified elementary functions. | |||||||||||

error out contains error information. This output provides standard error out functionality. |

Refer to the following VIs for examples of using the TFA Adaptive Transform VI:

- Chirplet TDR VI: labview\examples\Time Frequency Analysis\TFAApplications
- Sine Curve Fitting VI: labview\examples\Time Frequency Analysis\TFAApplications
- Adaptive Transform (ADT) and Adaptive Expansion (ADE) VI: labview\examples\Time Frequency Analysis\TFAFunctions
- Heart Sound TFA VI: labview\examples\Time Frequency Analysis\TFAApplications

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